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          Institute: MPI für Physik     Collection: MPI für Physik     Display Documents



ID: 544041.0, MPI für Physik / MPI für Physik
NLO QCD corrections to t anti-t H production in hadron collisions
Authors:Beenakker, W.; Dittmaier, S.; Krämer, M.; Plümper, B.; Spira, M.; Zerwas, P. M.
Date of Publication (YYYY-MM-DD):2003
Title of Journal:Nuclear Physics B
Journal Abbrev.:Nucl.Phys.B
Issue / Number:653
Start Page:151
End Page:203
Audience:Not Specified
Intended Educational Use:No
Abstract / Description:The Higgs boson H of the Standard Model can be searched for in the channels p
pbar / pp -> t tbar H + X at the Tevatron and the LHC. The cross sections for
these processes and the final-state distributions of the Higgs boson and top
quarks are presented at next-to-leading order QCD. To calculate these QCD
corrections, a special calculational technique for pentagon diagrams has been
developed and the dipole subtraction formalism has been adopted for massive
particles. The impact of the corrections on the total cross sections is
characterized by K factors, the ratios of the cross sections in next-to-leading
order over leading order QCD. At the central scale mu_0 = (2 m_t + M_H)/2 the K
factors are found to be slightly below unity for the Tevatron (K \sim 0.8) and
slightly above unity for the LHC (K \sim 1.2). Including the corrections
significantly stabilizes the theoretical predictions for total cross sections
and for the distributions in rapidity and transverse momentum of the Higgs
boson and top quarks.
Classification / Thesaurus:Phenomenology of High Energy Physics
Comment of the Author/Creator:50 pages, LaTeX, 17 figures
External Publication Status:published
Document Type:Article
Communicated by:N.N.
Affiliations:MPI für Physik
Identifiers:LOCALID:MPP-2002-74
URL:http://www.slac.stanford.edu/spires/find/hep/www?r...
URL:http://arXiv.org/abs/hep-ph/0211352
URL:http://publications.mppmu.mpg.de/?action=search&mp...
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